"California’s clean-air agency voted on Friday to push ahead with stricter emissions standards for cars and trucks, setting up a potential legal battle with the Trump administration over the state’s plan to reduce planet-warming gases."

"A federal court yesterday rejected an ambitious lawsuit from environmentalists who say federal regulators are biased toward approving natural gas pipelines."

"RICHMOND, Va. — Arsenic is illegally flowing out of one of the sites where Virginia's biggest utility stores coal ash, polluting surrounding waters, a federal judge ruled Thursday."

"With the state's Republican governor saying he will sign it, a bill to prevent the drilling practice nears a vote in the Senate."

"Exxon Mobil can’t locate a year’s worth of emails from an alias account used by former CEO Rex Tillerson, now the secretary of state."

"The cost to implement tough fuel-efficiency standards for cars imposed by the Obama administration for the first half of the next decade could be up to 40 percent lower than previously estimated using existing conventional technologies, according to a report from a nonprofit group released on Wednesday."

"The U.S. State Department has signed and issued a presidential permit to construct the Keystone XL pipeline. That reverses former President Barack Obama's 2015 decision to reject the controversial pipeline."

"California's air quality board voted unanimously on Thursday to approve methane regulations touted as the strictest adopted yet in the United States for controlling emissions of the second-most prevalent greenhouse gas in the atmosphere."

"A watchdog is alleging numerous problems at the federal government’s offshore drilling regulator, including in its inspection and environmental stewardship programs."

"Dozens of companies and organizations are pleading with Congress to save the popular Energy Star program for appliances and other products, rejecting President Trump’s proposal to eliminate it."